Untitled - Future Pipe Industries

Caution: Always provide a standard short pipe length outside thrust blocks (see section 5.8) to protect the pipeline from differential
settlement. A rubber wrap as detailed on the following drawing must be provided and should protrude about
1” outside the concrete block.
Nozzle connections are not necessary to be concrete encased. Nozzles are tee branches meeting all the following criteria:
1. Nozzle diameter 12”
2. Header diameter 3 times nozzle diameter
3. If the nozzle is not concentric and/or not perpendicular to the header pipe axis, the nozzle diameter shall be considered
to be the longest cord distance on the header pipe wall at the nozzle/pipe intersection.
Figure 17 : Rubber warp details
Restrained pipe installations (without thrust blocks)
FPI can provide special pipe and fittings that allow installation of pressure pipelines without thrust blocks. Pipe joints will typically
be a gasketed joint with a ‘lock’ to restrain the pipe (see section 5.6 for typical detail), alternatively pipe and fittings
can be laminated together using a ‘Butt-wrap’ type joint. Bull-wrap joints require skilled and trained technicians to perform
on site.
5.10: Flanged joints
FPI can provide flanged GRP pipe and fittings for use inside valve chambers. Contact your nearest sales office for flange thickness
before ordering flange bolts as Fiberglass flanges are thicker than steel flanges.
5.11: Fittings
One of the advantages of Fiberstrong FRP pipe systems are customized fittings, spools and headers. Our pipe system greatly
simplifies the valve chamber design and eliminates many unnecessary flanged joints as shown in
figure 18. Valves must be sufficiently anchored to take the thrust force.
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